Giant magnetocaloric effect in ε- (Mn0.83 Fe 0.17) 3.25 Ge antiferromagnet

J. Du; W. B. Cui; Q. Zhang; S. Ma; D. K. Xiong; Z. D. Zhang

doi:10.1063/1.2432274

Giant magnetocaloric effect in ε- (Mn_0.83 Fe _0.17) _3.25 Ge antiferromagnet

J. Du, W. B. Cui, Q. Zhang, S. Ma, D. K. Xiong, Z. D. Zhang

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42 Scopus citations

Abstract

The magnetic phase transition and magnetocaloric effect are investigated on ε- (Mn0.83 Fe0.17) 3.25 Ge compound. A large positive magnetic entropy change Δ SM is observed, which is accompanied with a field-induced metamagnetic transition from a collinear to a triangular antiferromagnetic configuration in this antiferromagnetic compound. The maximum value of Δ SM is 11.6 Jkg K at 93 K for a magnetic field change of 7 T. The study on systems with antiferromagnetic phases may open an important field in searching new materials for magnetic refrigeration.

Original language	English
Article number	042510
Journal	Applied Physics Letters
Volume	90
Issue number	4
DOIs	https://doi.org/10.1063/1.2432274
State	Published - 2007
Externally published	Yes

Funding

This work has been supported by the National Natural Science Foundation of China under Grant No. 50332020.

Funders	Funder number
National Natural Science Foundation of China	50332020

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10.1063/1.2432274

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abstract = "The magnetic phase transition and magnetocaloric effect are investigated on ε- (Mn0.83 Fe0.17) 3.25 Ge compound. A large positive magnetic entropy change Δ SM is observed, which is accompanied with a field-induced metamagnetic transition from a collinear to a triangular antiferromagnetic configuration in this antiferromagnetic compound. The maximum value of Δ SM is 11.6 Jkg K at 93 K for a magnetic field change of 7 T. The study on systems with antiferromagnetic phases may open an important field in searching new materials for magnetic refrigeration.",

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AB - The magnetic phase transition and magnetocaloric effect are investigated on ε- (Mn0.83 Fe0.17) 3.25 Ge compound. A large positive magnetic entropy change Δ SM is observed, which is accompanied with a field-induced metamagnetic transition from a collinear to a triangular antiferromagnetic configuration in this antiferromagnetic compound. The maximum value of Δ SM is 11.6 Jkg K at 93 K for a magnetic field change of 7 T. The study on systems with antiferromagnetic phases may open an important field in searching new materials for magnetic refrigeration.

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Giant magnetocaloric effect in ε- (Mn_0.83 Fe _0.17) _3.25 Ge antiferromagnet

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